jquery ajax fire 3 time

Question

Please see image and give me some advice.

 $.ajax({type: 'GET',url: "/_layouts/EmkayCRm/EEagle.ashx?caller=GetCallListFinalData&ID=" + $(Cbo).attr("ID"),
            timeout: 300000,cache: false,async: true,
            success: function(data) {
                  var Res = eval("(" + data + ")");

            }
        });